package jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * 执行DQL语句
 */
public class JDBCDemo5 {
    public static void main(String[] args) {
        //需求:查询teacher表中id,name,salary,title字段的信息
        try (Connection connection = DBUtil.getConnection();){
            Statement statement = connection.createStatement();
            String sql = "SELECT id,name,salary,title " +
                         "FROM teacher";
            ResultSet rs = statement.executeQuery(sql);
            while(rs.next()){
//                int id = rs.getInt("id");
//                String name = rs.getString("name");
//                int salary = rs.getInt("salary");
//                String title = rs.getString("title");
                int id = rs.getInt(1);
                String name = rs.getString(2);
                int salary = rs.getInt(3);
                String title = rs.getString(4);
                System.out.println(id+","+name+","+salary+","+title);
            }


        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}







